---
product_id: 13537507
title: "StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485)"
brand: "startech"
price: "₨4873"
currency: SCR
in_stock: true
reviews_count: 8
url: https://www.desertcart.sc/products/13537507-startech-com-4-port-pci-express-pcie-serial-combo-card
store_origin: SC
region: Seychelles
---

# 460 Kbps max data rate 4 versatile serial ports Dual profile for all PC builds StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485)

**Brand:** startech
**Price:** ₨4873
**Availability:** ✅ In Stock

## Summary

> 🔗 Future-proof your legacy gear with seamless serial power!

## Quick Answers

- **What is this?** StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485) by startech
- **How much does it cost?** ₨4873 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/13537507-startech-com-4-port-pci-express-pcie-serial-combo-card)

## Best For

- startech enthusiasts

## Why This Product

- Trusted startech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Installation:** Includes both low-profile and full-profile brackets to fit any PC chassis perfectly.
- • **Robust FIFO Buffering:** 256-byte deep FIFO per transmitter and receiver ensures reliable, uninterrupted data flow.
- • **All-in-One Breakout Cable:** Simplifies setup and saves costs by consolidating multiple serial connections into a single PCIe slot.
- • **Blazing Fast Data Transfer:** Supports up to 460 Kbps for smooth, lag-free communication with industrial and legacy devices.
- • **Universal Serial Connectivity:** Seamlessly add 2x RS232 + 2x RS422/485 ports for mixed protocol device integration.

## Overview

The StarTech.com PEX4S232485 is a high-performance 4-port PCI Express serial combo card featuring 2 RS232 and 2 RS422/485 ports. Designed for professional environments, it supports up to 460 Kbps data transfer rates and comes with dual-profile brackets and a breakout cable for versatile, cost-effective installation across various PC form factors.

## Description

4PORT PCIE RS232 RS422 RS485

## Features

- Add two RS232 and two RS422/485 serial ports to your PC through a PCI-Express expansion slot
- 4 Port PCI Express PCIe Serial Combo Card
- 4 port (2 x RS232, 2 x RS422/485) serial combo card
- PCI Express RS485 / PCIe RS485 / PCI Express RS422 / PCIe RS422 serial combo card
- Dual Profile PCIe serial card adapter with breakout cable
- This single PCI Express combo card is compatible with any serial device protocol (RS232, RS422, and RS485), allowing for communication with multiple devices over mixed protocols
- Includes both low profile/half-height and full profile brackets to ensure fitment into a broad range of system form factors
- The included breakout cable saves expense as an all-in-one solution, and allows the addition of multiple serial ports through a single PCI Express slot
- 4 port (2 x RS232, 2 x RS422/485) serial combo card
- RS232 data transfer rates up to 460 Kbps
- Supports 2-Wire / 4-Wire RS485 modes
- 256-byte deep FIFO per transmitter and receiver

## Technical Specifications

| Specification | Value |
|---------------|-------|
| National Stock Number | 0 |
| Brand | StarTech |
| Series | 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 |
| Item model number | PEX4S232485 |
| Operating System | Windows |
| Item Weight | 2.4 ounces |
| Product Dimensions | 5.3 x 0.6 x 2.7 inches |
| Item Dimensions  LxWxH | 5.3 x 0.6 x 2.7 inches |
| Number of Processors | 1 |
| Voltage | 240 Volts |
| Manufacturer | StarTech.com |
| Language | English |
| ASIN | B00AMCKKTM |
| National Stock Number | 0 |
| Is Discontinued By Manufacturer | No |
| Date First Available | December 21, 2012 |

## Product Details

- **Brand:** StarTech
- **Hardware Interface:** PCI
- **Product Dimensions:** 5.3"L x 0.6"W x 2.7"H
- **Style:** Classic
- **Item Weight:** 0.15 Pounds

## Images

![StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485) - Image 1](https://m.media-amazon.com/images/I/71sAYhwsSFL.jpg)
![StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485) - Image 2](https://m.media-amazon.com/images/I/71SPkC8qf4L.jpg)
![StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485) - Image 3](https://m.media-amazon.com/images/I/81HbLRnMylL.jpg)
![StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485) - Image 4](https://m.media-amazon.com/images/I/71mfO-hQ-rL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well for legacy equipment
*by J***D on December 7, 2023*

Purchased this card for a compact PC. Fortunately the card works with half-height bays and includes the adapter. It's nice that despite supporting 4 RS-232/422 interfaces, it only takes one slot. The 4 individual 232/422 connectors connect to the card with a single connection. The slight downside is that the bundle of cables coming off the card is a bit thick and cumbersome. You need to allot some space behind the PC to accommodate this.Worked well with my two RS-232 devices. I plan to connect to 422 devices, but have not done this yet.

### ⭐ RS-485 Doesn't work properly
*by H***. on March 5, 2024*

Tried to hook this up to my RS-485 stepper motor, which worked fine with a USB-485 converter. No good.Did a loopback test on the card port-No GoodTried hooking the USB-485 to the card to see if it could receive and that DID workBUTIf you switch to a different COM port (not the one hooked up to) it still receives data, just totally garbled so the separate ports aren't properly isolated.I could get it talking port to port, but the loopback never worked.Bottom line, the RS-485 is junk on these. Wasted much more time than the money I tried to save buying this*UPDATE Tried it with a different brand card and it works fine so it was definitely the Startech card being bad

### ⭐⭐⭐⭐⭐ works
*by B***K on December 28, 2021*

works with setup file

## Frequently Bought Together

- StarTech.com 4 Port PCI Express PCIe Serial Combo Card with Breakout Cable - 2 x RS232 2 x RS422 / RS485 - Dual Profile , TAA (PEX4S232485)
- Crucial 32GB DDR5 RAM Kit (2x16GB), 5600MHz (or 5200MHz or 4800MHz) Laptop Memory 262-Pin SODIMM, Compatible with Intel Core and AMD Ryzen 7000, Black - CT2K16G56C46S5
- SAMSUNG 990 PRO SSD NVMe M.2 PCIe Gen4, M.2 2280 Internal Solid State Hard Drive, Seq. Read Speeds Up to 7,450 MB/s for High End Computing, Gaming, and Heavy Duty Workstations, MZ-V9P2T0B/AM

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-03*